Float for dredges.



3 SHEETS-SHEET 1 Patented Deo. 5, 1911.

H. J. BARNHART L H. T. GRAGELY.

V`FLOAT FOB. DREDGES.

APPLIOATION FILED SEPT. 2o. 1909.

1,010,568. Patented Dec.5,1911.

SSHBETS-SHEET 2.

H. J. BARNHART L H. T. GRAGELY.

FLOAT POP DREDGES.

APPLICATION PILPD SEPT. zo, 1909.

,. Patented Dec. 5, 1911.

3 SHEETS-SHEET s.

f Y f l Chmn,

iiirnn srariisrariinr onirica.

HARRY J. BARNHART AND HARVEY 'l'. GB-ACELY, OF MARION, OHIO. ASSIGNORS TO THE MARION STEAM SHOVEL COMPANY, OF MARION, OHIO, A CORPORATION OF- OHIO.

y FLOAT FOR DREDGES.

Specication of Let-ters Patent.

Patented Dec. 5, 1911.

Application filed September 20, 1909. Serial No. 518,467.

To all whom it may concern:

Be it known that we, HARRY J.- BARN- ifmn'r and Han-vnr T. GRACELY, citizens of the United States, residing at Marion, in the county of Marion and State of Ohio,

have. invented certain new and useful lm The object of the invention is to provideK a. dredge which can be readily dismantled to permit the saine to pass through the-locks et a canal and under low bridges, both where the bridge occurs immediately above the lock and where they occur separately.

To enable a dredge to pass through the loclis of a canal it is necessary to malte the body portion narrow, and, to impart to this body portion the buoyancy and stability required for the practical operation of the dredge, floats are secured on each side thereot. To permit the dredge to be readily dismantled and assembled, before and after passing' through a lock, it is a''urtlierobjeCt of the invention to provide means for" easily and quickly attaching and detaching these floats to the body portion of the dredge, and it is also an object ot the invention to provide means whereby the A-frame and boom may be lowered into a position in which they will pass beneath bridges or other obstructions extending aboye the canal.

.A further object et the invention is to so arrange and mount the several actuating drums as to accommodate the same to the 'narrow hull construction and vat the same v time afford ample clearance for the respective cables.

lVith these objects in view our invention.

I f particularly pointed out vinthe claims.

In the accompanying drawings, is a top plan View, a' dredge embodying Figure l partially 1n section, of our invention; Fig'. 2

` the hull.

is, a transverse sectional view of the saine; Fig. is a longitudinal sectional view thereot; and Fig. 4 is a detail view ot one of the folding braces.

In these drawings we have illustrated one embodiment of our invention and have shown the same as applied to a dipper dredge of well known construction. This dredge comprises a body portion or hull proper l, upon which is 'mounted the sup-- l porting or A-fanie 2 and boom 3, the outer end of which is connected to the A-fraine i by the usual connection, as shown at 4s. The boom 8 has the usual dipper arni k5 and `dipper .6, the dipper arm being capable of beingA moved'into such a position as to cause the'sanie to extend at a slight angle to the boom 3. Thebody portion or hull proper l.

is built very pass through the locks of a canal or through other narrow portions of the channel. Consequently, the width of the hull is not suli`icient to impart to the same the necessary buoyancy and stability to enable the dredge to be operated. To overcome this deficiency floats 7 are secured to the opposite sides ot the bodyiportion l and are adapted to be det-ached tl'erefrom when it is necessary to pass the dredge through the locks. These floats may be of any suitable length up to the lengthv ot' the dredge, but. we have shown the same, in the present instance, as o substantially haiic the length of the dredge.

It is desirable that the Hoats '7 should be detached from and attached to the hull l as quickly possible, thus enabling thc dredge to be dismantled, to pass through the lock, to be set up and to resume operations ina minimum amount oiE time. To accomplish this result we have mounted upon the hull iii'ovable braces which are so arranged that they may be moved over the floats, and, when. inthis position, they will retain the floats their normal positions relatively to the hull and may be moved away from the floatsto enable the saine to be removed from Eachof these braces is here shown as substantially triangular in fornnhas its lower horizontal. member 8" pivotally connected at its inner endy to the hull 1 and is narrow to enable the saine to.

- rigidly y 17 of theA deck house,

of a length substantially equal to-'the width of the Aiioat. The pivotal connectionpbetween the horizontal member 8 of the brace 4means of angle plates 13, andextend some distance beyond the upper end of the vertical member -14 of the triangular brace, to which member it is connected by brace plates 15. I That portion of the inclined member.A

12 lying beyond the vertical member 14 has a bearing block 16 which is arranged between bearing lugs 16, secured to the frame mounted on the body portion or hull 1, and is pivotally connected ,to the bearing lugs and to the frame 1-7 by means of a pin 18 which extends through l said bearing lugs and the bearing block.

brace is swung into "Phusfait will be observed that each triangular bifale is pivotally mounted on the hull 1 near the side thereof and that when this a position at substantially `right angles to thc length of the hull 1, it will extend Vabove the-Heat 7 arranged on the corresponding side of the hull and i Vwill prevent the upward movement of-the which twobraces on each side of the dredge.`

float relatively' tov the hull; and that this brace can be quickly and easily moved about its pivotal center to fold the same onto the hull, thereby moving the same into such a `position that it will notinterfere with the removal of the iioat. The number of these foldin braces which are employed would depen 'largely upon the length of the floats.

and upon the use of other securing means. In the present inst-ance we have shown but If desirable, additional retainmg means maybe provided for thel float to hold the 'same against lateral movement relatively to the hull.

These additional retaining means are here shownas lconsisting of flexible members, such as chains 19, l'which` are secured to the'lower, .outer cornercffthe hull near the ends of the-iioat, as shown-at 20,

'and extendv upward and outwardl to the upper and outer corner ofthe Boat, where,

cfa bolt ;21

they are vsecured by means extends through a'plate or clip '22 and is secured thereto by'means of a nut 23. This connection is a simple one and can be u1ckly` and easily released when it is de sired to remove the float.

It will be apparent from the foregoing description that y the use of the floats the is rigidly" secured to the horizontal.

prisin lhull of the dredge is given the necessary stability, Width of and, by detaching the floats, the the hull is so reduced that it can be readily passed through locks or other narrow channels. Further, by the use of applicants connecting devices the floats can be readily detached from the hull and attached thereto after the narrow 'iull has been conveyed through the lock. The operation of so disconnecting and connecting the floats is very simple and consumes but a very small amountof time, and thereby interferes to a minimum extent with the Work in hand.

Ve wish it to be understood that we do not desire to be limited to the details, of construction shown and described, for obvious modifications will ,occur to-a person' skilled'in the art.

Having thus fully. described our invention, what we' claim as new and desire to secure by Letters Patent, is

1. In a dredge the combination, with a hull and a float, of a brace loosely connected to said hull and normally movable relatively thereto, said brace being .di onnec'ted from said ioa. and arranged to e tend over the latter to retain the same in position and adapted tobe moved away from the float to permit the float to be removed.

2. In a dredge, the combination, with a hull, and a float, of a brace pivotally mounted on said hull and adapted to be swung out over the float to retain the same in position adjacent to said hull and to be folded aga-inst said hull to permit said float to be moved away from said hull. y

3. In adredge, the combination, with a hull, and a float, of a triangular frame pivotally connected to said hull and having` a horizontal portion adapted to extend across said loat, said brace being adapted to fold 'against said hull to permit the removal of said float.

4. In a dredge, the combination, with a hull, and a float, of a triangular brace coma horizontal member arranged to etten above said float and pivotally connected at its inner end to said hul-l, an inclined-A member rigidly connected to said horizontal member and pivotally connected fait 1il-ts upper end to a part carried by said 5. In a dredge, the combination, with.; a hull, and a'ioat, of a foldable brace arranged tol extend above the float to hold the same against vertical movement relatively to the hull, and a flexible member secured at one end to said dredge and secured atl its other vend to said float to hold the same against lateral movement relativelyto the hull.

6. In a dredge, the combination, witha hull, and a float arranged at one side of said hull, of a pivoted brace mounted on said hull an adapted to extend above Said float lot to hold the same against vertical movement In testimony whereof, We affix 01111' signarelatively to the hull, and a flexible memtures in presence of two witnesses. berconnection to the lower corner' of said o HARRY J. AlmHAIRT hull, extendmo upwardly and outwardly 4 -Y 5 and connected oto said float near the upper HARVEY T RAQRLL and outer corner thereof, the connection b'efitnessem tween Said flexible m nber and one of said FRED E. GUTHERY,

92u15 lwngg flvarrlyll Q, D. N. ANSSINGTON. 

